I want a pure vechur cow who give 5 liters milk

Vechur cow is a very small indigenous dairy cow, but five liters daily is usually on the high side for a pure one. As a general practice, pure Vechur is better for low-input family milk, not for high-volume milk. If you want steady five liters or more, look more at Sahiwal, Gir, HF cross, or Jersey cross. Before paying, milk the cow in your presence, do a CMT test on all four quarters, ask which month of lactation she is in, and check age and body condition. If the animal is above fifty thousand rupees, take a Pashumitra or vet with you. If you want, I can help you shortlist the right dairy cow for your budget and climate.